MPLAB® XC8 USER’S GUIDE
FOR EMBEDDED ENGINEERS
MPLAB® XC8 User’s Guide for Embedded Engineers
INTRODUCTION
This document presents five code examples for 8-bit devices and the MPLAB XC8 C
compiler. Some knowledge of microcontrollers and the C programming language is
necessary.
1.
2.
3.
4.
5.
Turn LEDs On or Off
Flash LEDs Using _delay() Function
Count Up on LEDs Using Interrupts as Delay
Display Potentiometer Values on LEDs Using A/D
Display EEPROM Data Values on LEDs
A
B
Run Code in MPLAB X IDE
Get Software and Hardware
2015 Microchip Technology Inc.
DS50002400A-page 1
MPLAB® XC8 User’s Guide for Embedded Engineers
1. TURN LEDS ON OR OFF
This example will light alternate LEDs on the Explorer 8 board with a PIC16F1719
microcontroller (MCU). For more information, see Section B. “Get Software and
Hardware”.
#include <xc.h>
see Section 1.1
// PIC16F1719 Configuration Bit Settings
// For more on Configuration Bits,
// consult your device data sheet
see Section 1.2
// CONFIG1
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
FOSC = ECH
WDTE = OFF
PWRTE = OFF
MCLRE = ON
CP = OFF
BOREN = ON
CLKOUTEN = OFF
IESO = ON
FCMEN = ON
//
//
//
//
//
//
//
//
//
External Clock, 4-20 MHz
Watchdog Timer (WDT) disabled
Power-up Timer disabled
MCLR/VPP pin function is MCLR
Flash Memory Code Protection off
Brown-out Reset enabled
Clock Out disabled.
Internal/External Switchover on
Fail-Safe Clock Monitor enabled
// CONFIG2
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
WRT = OFF
PPS1WAY = ON
ZCDDIS = ON
PLLEN = OFF
STVREN = ON
BORV = LO
LPBOR = OFF
LVP = OFF
//
//
//
//
//
//
//
//
Flash Memory Self-Write Protect off
PPS one-way control enabled
Zero-cross detect disabled
Phase Lock Loop disable
Stack Over/Underflow Reset enabled
Brown-out Reset low trip point
Low-Power Brown Out Reset disabled
Low-Voltage Programming disabled
void main(void) {
unsigned char portValue = 0x05;
// Port D access
see Section 1.3
ANSELD = 0x0; // set to digital I/O (not analog)
TRISD = 0x0;
// set all port bits to be output
LATD = portValue;
// write to port latch - RD[0:3] = LED[0:3]
// Port B access
ANSELB = 0x0; // set to digital I/O (not analog)
TRISB = 0x0;
// set all port bits to be output
LATB = portValue;
// write to port latch - RB[0:3] = LED[4:7]
return;
}
1.1
Header File <xc.h>
This header file allows code in the source file to access compiler- or device-specific features. This and other header files may be found in the MPLAB XC8 installation directory
in the include subdirectory.
Based on your selected device, the compiler will set macros that allow xc.h to vector
to the correct device-specific header file. Do not include a device-specific header in
your code or your code will not be portable.
DS50002400A-page 2
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MPLAB® XC8 User’s Guide for Embedded Engineers
1.2
Configuration Bits
Microchip devices have configuration registers with bits that enable and/or set up
device features.
Note:
If you do not set Configuration bits correctly, your device will not operate at
all or at least not as expected.
WHICH CONFIGURATION BITS TO SET
In particular, you need to look at:
• Oscillator selection - This must match your hardware’s oscillator circuitry. If this
is not correct, the device clock may not run. Typically, development boards use
high-speed crystal oscillators. From the example code:
#pragma config FOSC = ECH
• Watchdog timer- It is recommended that you disable this timer until it is required.
This prevents unexpected Resets. From the example code:
#pragma config WDTE = OFF
• Code protection - Turn off code protection until it is required. This ensures that
device memory is fully accessible. From the example code:
#pragma config CP = OFF
Different configuration bits may need to be set up to use another 8-bit device (rather
than the PIC16F1719 MCU used in this example). See your device data sheet for the
number and function of corresponding configuration bits. Use the part number to
search http://www.microchip.com for the appropriate data sheet.
For more about configuration bits that are available for each device, see the following
file in the location where MPLAB XC8 was installed:
MPLAB XC8 Installation Directory/docs/chips
HOW TO SET CONFIGURATION BITS
In MPLAB X IDE, you can use the Configuration Bits window to view and set these bits.
Select Window>PIC Memory Views>Configuration Bits to open this window.
FIGURE 1:
CONFIGURATION WINDOW
Once you have the settings you want, click Generate Source Code to Output and
then copy the pragma directives from the Output window into your code, as was done
in the example code.
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MPLAB® XC8 User’s Guide for Embedded Engineers
1.3
Port Access
Digital I/O device pins may be multiplexed with peripheral I/O pins. To ensure that you
are using digital I/O only, disable the other peripheral(s). Do this by using the predefined C variables that represent the peripheral registers and bits. These variables are
listed in the device-specific header file in the compiler include directory. To determine
which peripherals share which pins, refer to your device data sheet.
For the example in this section, Port D and Port B pins are multiplexed with peripherals
that are disabled by default. The only issue is that the pins default to analog so you will
need to set them to digital I/O. For Port D:
ANSELD = 0x0;
// set to digital I/O (not analog)
A device pin is connected to either a digital I/O port (PORT) or latch (LAT) register in the
device. For the example, LATD and LATB are used. The variable portValue is
assigned a value that is used on both latches. For Port D:
LATD = portValue;
// write to port latch - RD[0:3] = LED[0:3]
In addition, there is a register for specifying the directionality of the pin - either input or
output - called a TRIS register. For the example in this section, TRISD and TRISB are
used. Setting a bit to 0 makes the pin an output, and setting a bit to 1 makes the pin an
input. For Port D:
TRISD = 0x0;
DS50002400A-page 4
// set all port bits to be output
2015 Microchip Technology Inc.
MPLAB® XC8 User’s Guide for Embedded Engineers
2. FLASH LEDs USING _delay() FUNCTION
This example is a modification of the previous code. Instead of just turning on LEDs,
this code will flash alternating LEDs.
#include <xc.h>
// PIC16F1719 Configuration Bit Settings
// For more on Configuration Bits, consult your device data sheet
// CONFIG1
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
FOSC = ECH
WDTE = OFF
PWRTE = OFF
MCLRE = ON
CP = OFF
BOREN = ON
CLKOUTEN = OFF
IESO = ON
FCMEN = ON
//
//
//
//
//
//
//
//
//
External Clock, 4-20 MHz
Watchdog Timer (WDT) disabled
Power-up Timer disabled
MCLR/VPP pin function is MCLR
Flash Memory Code Protection off
Brown-out Reset enabled
Clock Out disabled.
Internal/External Switchover on
Fail-Safe Clock Monitor enabled
// CONFIG2
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
WRT = OFF
PPS1WAY = ON
ZCDDIS = ON
PLLEN = OFF
STVREN = ON
BORV = LO
LPBOR = OFF
LVP = OFF
//
//
//
//
//
//
//
//
Flash Memory Self-Write Protect off
PPS one-way control enabled
Zero-cross detect disabled
Phase Lock Loop disable
Stack Over/Underflow Reset enabled
Brown-out Reset low trip point
Low-Power Brown Out Reset disabled
Low-Voltage Programming disabled
void main(void) {
unsigned char portValue;
// Port D access
ANSELD = 0x0; // set to digital I/O (not analog)
TRISD = 0x0;
// set all port bits to be output
// Port B access
ANSELB = 0x0; // set to digital I/O (not analog)
TRISB = 0x0;
// set all port bits to be output
while(1) {
see Section 2.1
portValue = 0x05;
LATD = portValue; // write to port latch - RD[0:3] = LED[0:3]
LATB = portValue; // write to port latch - RB[0:3] = LED[4:7]
// delay value change
_delay(25000);
see Section 2.2
// delay in instruction cycles
portValue = 0x0A;
LATD = portValue; // write to port latch - RD[0:3] = LED[0:3]]
LATB = portValue; // write to port latch - RB[0:3] = LED[4:7]
_delay(25000);
// delay in instruction cycles
}
return;
}
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MPLAB® XC8 User’s Guide for Embedded Engineers
2.1
The while() Loop and Variable Values
To make the LEDs on Port D and Port B change, a variable portValue is assigned a
value in the first part of the loop, and a complementary value in the second part of the
loop. To perform the loop, while(1) { } was used.
2.2
The _delay() Function
Because the speed of execution will, in most cases, cause the LEDs to flash faster than
the eye can see, execution needs to be slowed. _delay()is a built-in function of the
compiler.
For more details on the delay built-in, see the MPLAB XC8 C Compiler User’s Guide
(DS50002053).
DS50002400A-page 6
2015 Microchip Technology Inc.
MPLAB® XC8 User’s Guide for Embedded Engineers
3. COUNT UP ON LEDs USING INTERRUPTS AS DELAY
This example is a modification of the previous code. Although the delay loop in the previous example was useful in slowing down loop execution, it created dead time in the
program. To avoid this, a timer interrupt can be used.
#include <xc.h>
// PIC16F1719 Configuration Bit Settings
// For more on Configuration Bits, consult your device data sheet
// CONFIG1
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
FOSC = ECH
WDTE = OFF
PWRTE = OFF
MCLRE = ON
CP = OFF
BOREN = ON
CLKOUTEN = OFF
IESO = ON
FCMEN = ON
//
//
//
//
//
//
//
//
//
External Clock, 4-20 MHz
Watchdog Timer (WDT) disabled
Power-up Timer disabled
MCLR/VPP pin function is MCLR
Flash Memory Code Protection off
Brown-out Reset enabled
Clock Out disabled.
Internal/External Switchover on
Fail-Safe Clock Monitor enabled
// CONFIG2
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
#pragma config
WRT = OFF
PPS1WAY = ON
ZCDDIS = ON
PLLEN = OFF
STVREN = ON
BORV = LO
LPBOR = OFF
LVP = OFF
//
//
//
//
//
//
//
//
Flash Memory Self-Write Protect off
PPS one-way control enabled
Zero-cross detect disabled
Phase Lock Loop disable
Stack Over/Underflow Reset enabled
Brown-out Reset low trip point
Low-Power Brown Out Reset disabled
Low-Voltage Programming disabled
// Interrupt function
see Section 3.1
void interrupt isr(void){
// only process Timer0-triggered interrupts
if(INTCONbits.TMR0IE && INTCONbits.TMR0IF) {
// static variable for permanent storage duration
static unsigned char portValue;
// write to port latches
LATD = portValue++;
// RD[0:3] = LED[0:3]
LATB = (portValue++ >> 4); // RB[0:3] = LED[4:7]
// clear this interrupt condition
INTCONbits.TMR0IF = 0;
}
}
void main(void){
// Port D access
ANSELD = 0x0; // set to digital I/O (not analog)
TRISD = 0x0;
// set all port bits to be output
// Port B access
ANSELB = 0x0; // set to digital I/O (not analog)
TRISB = 0x0;
// set all port bits to be output
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MPLAB® XC8 User’s Guide for Embedded Engineers
// Timer0 setup
see Section 3.2
OPTION_REG = 0xD7; // timer 0 internal clock, prescaler 1:256
INTCONbits.TMR0IE = 1; // enable interrupts for timer 0
ei(); // enable all interrupts
while(1);
return;
}
3.1
The Interrupt Function isr()
Functions are made into interrupt functions by using the interrupt specifier. As this
one interrupt function may have to handle multiple interrupt sources, code was added
to ensure the counter portValue is only incremented if Timer0 generated the interrupt.
3.2
Timer0 Setup
Code also needs to be added to the main routine to enable and set up the timer, enable
timer interrupts, and change the latch assignment, now that the variable value changes
are performed in the interrupt service routine.
To enable all interrupts, ei() is used, defined in xc.h.
DS50002400A-page 8
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MPLAB® XC8 User’s Guide for Embedded Engineers
4 DISPLAY POTENTIOMETER VALUES ON LEDS USING A/D
This example uses the same device and the Port B and Port D LEDs as the previous
example. However, in this example values from a potentiometer on the demo board
provide A/D input through Port A that is converted and displayed on the LEDs.
Instead of generating code by hand, the MPLAB Code Configurator (MCC) is used. The
MCC is a plug-in available for installation under the MPLAB XIDE menu Tools>Plugins,
Available Plugins tab. See MPLAB X IDE Help for more on how to install plugins.
For information on the MCC, including the MPLAB® Code Configurator User’s Guide
(DS40001725), go to the MPLAB Code Configurator web page at:
http://www.microchip.com/code_configurator
For this example, the MCC GUI was set up as shown in the following graphics.
FIGURE 2:
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ADC PROJECT RESOURCES
DS50002400A-page 9
MPLAB® XC8 User’s Guide for Embedded Engineers
FIGURE 3:
DS50002400A-page 10
ADC SYSTEM PROJECT RESOURCE CONFIGURATION
2015 Microchip Technology Inc.
MPLAB® XC8 User’s Guide for Embedded Engineers
FIGURE 4:
ADC PROJECT RESOURCE CONFIGURATION
FIGURE 5:
ADC PROJECT RESOURCE PIN SELECTION AND PIN TABLE
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DS50002400A-page 11
MPLAB® XC8 User’s Guide for Embedded Engineers
DS50002400A-page 12
FIGURE 6:
ADC GPIO PROJECT RESOURCE CONFIGURATION
FIGURE 7:
ADC GPIO PROJECT RESOURCE PIN SELECTION
2015 Microchip Technology Inc.
MPLAB® XC8 User’s Guide for Embedded Engineers
FIGURE 8:
ADC GPIO PROJECT RESOURCE PIN TABLE
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DS50002400A-page 13
MPLAB® XC8 User’s Guide for Embedded Engineers
When the code is configured as shown in the previous figures, click the Generate
Code button on the MCC tab. Code generated by the MCC is modular. Therefore main,
system and peripheral code are all in individual files. Also, each peripheral has its own
header file.
Note:
After you create a main project, you can either add a main.c template file
before using MCC or you can let MCC add main.c for you.
FIGURE 9:
ADC PROJECT TREE FOR CODE GENERATED BY MCC
Editing of main.c is always required to add functionality to your program. Review the
generated files to find any functions or macros you may need in your code.
DS50002400A-page 14
2015 Microchip Technology Inc.
MPLAB® XC8 User’s Guide for Embedded Engineers
4.1
main.c Modified Code
The main.c template file has been edited as shown below. Some comments have
been removed as described in < >. Code added to main() is in red.
/**
Generated Main Source File
<See generated main.c file for file information.>
*/
/*
Copyright (c) 2013 - 2015 released Microchip Technology Inc.
All rights reserved.
<See generated main.c file for additional copyright information.>
*/
#include "mcc_generated_files/mcc.h"
/*
Main application
*/
void main(void) {
// initialize the device
SYSTEM_Initialize();
// <No interrupts used - see generated main.c file for code.>
while (1) {
// Start A/D conversion
see Section 4.2
ADC_StartConversion(channel_AN0);
// Wait for ADC to complete
see Section 4.3
while(!ADC_IsConversionDone());
// Write to Port Latches
see Section 4.4
LATD = ADRESH; // RD[0:3] = LED[0:3]
LATB = (ADRESH >> 4); // RB[0:3] = LED[4:7]
}
}
/**
End of File
*/
4.2
Start A/D Conversion
From the adc.c module, use the function:
void ADC_StartConversion(adc_channel_t channel)
The variable channel is of typedef adc_channel_t defined in adc.h. For this
example, pot input is on RA0, so select channel_AN0.
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MPLAB® XC8 User’s Guide for Embedded Engineers
4.3
Wait for ADC to compete
From the adc.c module, use the function:
bool ADC_IsConversionDone()
This function returns the negated value of the ADCON0bits.GO_nDONE bit (defined in
the device header file). However, the actual value of this bit is desired in the main
while loop, so the return value is negated again.
4.4
Write to Port Latches
As only 8 LEDs are available, just the value from ADRESH is displayed. The lower bits
are displayed via LATD on LEDs 0 through 3, and the upper bits are shifted so they can
be displayed via LATB on LEDs 4 through 7.
DS50002400A-page 16
2015 Microchip Technology Inc.
MPLAB® XC8 User’s Guide for Embedded Engineers
5. DISPLAY EEPROM DATA VALUES ON LEDS
This example uses another Microchip device, the PIC16F1939 MCU, to demonstrate
how to write to and read from EEPROM Data (EEData). Read values are displayed on
Port D and Port B LEDs.
Again, MPLAB Code Configurator (MCC) is used to generate most of the code. To find
out how to install and get the user’s guide for MCC, see:
Section 4 “Display Potentiometer Values on LEDs Using A/D”.
For this example, the MCC GUI was set up as shown in the following graphics.
FIGURE 10:
2015 Microchip Technology Inc.
EEDATA PROJECT RESOURCES
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MPLAB® XC8 User’s Guide for Embedded Engineers
FIGURE 11:
DS50002400A-page 18
EEDATA SYSTEM PROJECT RESOURCE CONFIGURATION
2015 Microchip Technology Inc.
MPLAB® XC8 User’s Guide for Embedded Engineers
FIGURE 12:
EEDATA MEMORY PROJECT RESOURCE CONFIGURATION
FIGURE 13:
EEDATA GPIO PROJECT RESOURCE CONFIGURATION
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DS50002400A-page 19
MPLAB® XC8 User’s Guide for Embedded Engineers
FIGURE 14:
DS50002400A-page 20
EEDATA GPIO PROJECT RESOURCE PIN SELECTION
2015 Microchip Technology Inc.
MPLAB® XC8 User’s Guide for Embedded Engineers
FIGURE 15:
EEDATA GPIO PROJECT RESOURCE PIN TABLE
2015 Microchip Technology Inc.
DS50002400A-page 21
MPLAB® XC8 User’s Guide for Embedded Engineers
After your code is configured as shown in the previous figures, click the Generate
Code button on the MCC tab. Code generated by the MCC is modular. Therefore main,
system, and peripheral code are all in individual files. Also, each peripheral has its own
header file.
Note:
After you create a main project, you can either add a main.c template file
before using MCC or you can let MCC add main.c for you.
FIGURE 16:
EEDATA PROJECT TREE FOR CODE GENERATED BY MCC
Editing of main.c is always required to add functionality to your program. Review the
generated files to find any functions or macros you may need in your code.
DS50002400A-page 22
2015 Microchip Technology Inc.
MPLAB® XC8 User’s Guide for Embedded Engineers
5.1
main.c Modified Code
The main.c template file has been edited as shown below. Some comments have
been removed as described in < >. Code added is in red.
/**
Generated Main Source File
<See generated main.c file for file information.>
*/
/*
Copyright (c) 2013 - 2015 released Microchip Technology Inc.
All rights reserved.
<See generated main.c file for additional copyright information.>
*/
#include "mcc_generated_files/mcc.h"
#define NUM_EE_VALUES 64
/*
Main application
*/
void main(void) {
// initialize the device
SYSTEM_Initialize();
// <No interrupts used - see generated main.c file for code.>
// Declare RAM array, loop variable
see Section 5.2
volatile unsigned char RAMArray[NUM_EE_VALUES];
unsigned char i;
// Write initial values to EEPROM Data
PIR2bits.EEIF = 0x0; // clear write flag
see Section 5.3
for(i=0; i<NUM_EE_VALUES; i++){
DATAEE_WriteByte(_EEADRL_EEADRL_POSN + i, i);
while(!PIR2bits.EEIF); // check for write finished
PIR2bits.EEIF = 0x0;
}
while(1){
see Section 5.4
// Read from EEPROM and display
for(i=0; i<NUM_EE_VALUES; i++){
RAMArray[i] = DATAEE_ReadByte(_EEADRL_EEADRL_POSN + i);
LATD = RAMArray[i]; // RD[0:3] = LED[0:3]
LATB = (RAMArray[i] >> 4); // RB[0:3] = LED[4:7]
_delay(25000);
}
// Write to EEPROM in reverse order
for(i=0; i<NUM_EE_VALUES; i++){
DATAEE_WriteByte(_EEADRL_EEADRL_POSN +
(NUM_EE_VALUES - 1) - i, RAMArray[i]);
while(!PIR2bits.EEIF); // check for write finished
PIR2bits.EEIF = 0x0;
}
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MPLAB® XC8 User’s Guide for Embedded Engineers
};
}
/**
End of File
*/
5.2
EEData Associated Variables
Variables used to store data from an EEData read or write must match the types specified in the read/write function prototype, referenced from mcc.h and found in
memory.h:
void DATAEE_WriteByte(uint8_t bAdd, uint8_t bData);
uint8_t DATAEE_ReadByte(uint8_t bAdd);
From stdint.h (also referenced), uint8_t is the same as unsigned char.
5.3
Write to EEData
EEData is written twice in this example: first to initialize values in EEData memory and
second to change the data for dynamic display.
Writing to EEData takes more than one cycle, so a write-complete flag is used to determine when the write is done (PIR2bits.EEIF). The flag is cleared initially, and again,
after each time the write completes. (This flag must be cleared in software.)
5.4
Read from EEData
After EEData is written, memory values are read into a RAM array and then displayed
on Port D and Port B LEDs. The values in the RAM array are used in this write loop to
change the values in EEData memory.
Because the speed of execution will, in most cases, cause the LEDs to flash faster than
the eye can see, the _delay() function is used again (as in Example 2) to slow
execution.
DS50002400A-page 24
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MPLAB® XC8 User’s Guide for Embedded Engineers
A. RUN CODE IN MPLAB X IDE
First, create a project:
1. Launch MPLAB X IDE.
2. From the IDE, launch the New Project Wizard (File>New Project).
3. Follow the screens to create a new project:
a) Choose Project: Select “Microchip Embedded”, and then select
“Standalone Project”.
b) Select Device: Select the example device.
c) Select Header: None.
d) Select Tool: Select your hardware debug tool, SNxxxxxx. If you do not see
a serial number (SN) under your debug tool name, ensure that your debug
tool is correctly installed. See your debug tool documentation for details.
e) Select Plugin Board: None.
f) Select Compiler: Select XC8 (latest version number) [bin location]. If you
do not see a compiler under XC8, ensure the compiler is correctly installed
and that MPLAB X IDE is aware of it (Tools>Options, Embedded button,
Build Tools tab). See MPLAB XC8 and MPLAB X IDE documentation for
details
g) Select Project Name and Folder: Name the project.
Now, create a file to hold the example code:
1. Right click on the project name in the Projects window. Select New>Empty FIle.
The New Empty File dialog will open.
2. Under “File name”, enter a name.
3. Click Finish.
4. Cut and paste the example code from this user’s guide into the empty editor
window and select File>Save.
Build, download to a device, and execute the code by selecting to Debug Run your
code. You will see every other LED lit on the demo board. Click Halt to end execution.
FIGURE 17:
TOOLBAR ICONS
DEBUG RUN
2015 Microchip Technology Inc.
HALT
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MPLAB® XC8 User’s Guide for Embedded Engineers
B. GET SOFTWARE AND HARDWARE
For the MPLAB XC8 projects in this document, the Explorer 8 board with either a
PIC16F1719 or PIC16F1939 MCU is powered from a 9V external power supply and
uses standard (ICSP™) communications. MPLAB X IDE was used for development.
B.1
Get MPLAB X IDE and MPLAB XC8 C Compiler
MPLAB X IDE can be found at:
http://www.microchip.com/mplabx
The MPLAB XC8 C compiler can be found at:
http://www.microchip.com/mplabxc
B.2
Get PIC® MCUs
The PIC MCUs used in the examples are available at:
http://www.microchip.com/PIC16F1719
http://www.microchip.com/PIC16F1939
B.3
Set Up the Explorer 8 Board
The Explorer 8 development board is available at:
http://www.microchip.com/explorer8
Jumpers were set up as shown in the following tables.
TABLE 1-1:
Jumper
JUMPER SELECTS FOR PROJECTS
Selection
Description
J2
BRD+5V
Power board from power supply (not USB)
J14
+5V
Device Power level
J24
Open
+5V used (not 3.3V)
J7
Closed
Enable LEDs on Port D <RD0:3>
J21
Closed
Enable LEDs on Port B <RB0:3>
J36
OSC1 to RA7
OSC1 CLKIN (8MHz External Oscillator)
J37
OSC2 to RA6
OSC2 CLKOUT (8MHz External Oscillator)
J51
PGD to RB7
ICSPDAT
J52
PGC to RB6
ISCPCLK
TABLE 1-2:
JUMPER SELECTS NOT USED
Jumper
Selection
Description
JP2
Closed
LCD not used
J22, J23, J53, J54
Open
LCD not used
J15, J16
Open
Digilent Pmod™ Connectors not used
J43, J44, J45, J46, J47
Open
mikroBUS not used
J41, J42, J48, J49, J50
Open
mikroBUS not used
J4, J31
VCAP
RA5, RA4 not used
B.4
Get Microchip Debug Tools
Emulators and Debuggers may be found on the Development Tools web page:
http://www.microchip.com/devtools
DS50002400A-page 26
2015 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights unless otherwise stated.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
FlashFlex, flexPWR, JukeBlox, KEELOQ, KEELOQ logo, Kleer,
LANCheck, MediaLB, MOST, MOST logo, MPLAB,
OptoLyzer, PIC, PICSTART, PIC32 logo, RightTouch, SpyNIC,
SST, SST Logo, SuperFlash and UNI/O are registered
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
The Embedded Control Solutions Company and mTouch are
registered trademarks of Microchip Technology Incorporated
in the U.S.A.
Analog-for-the-Digital Age, BodyCom, chipKIT, chipKIT logo,
CodeGuard, dsPICDEM, dsPICDEM.net, ECAN, In-Circuit
Serial Programming, ICSP, Inter-Chip Connectivity, KleerNet,
KleerNet logo, MiWi, MPASM, MPF, MPLAB Certified logo,
MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code
Generation, PICDEM, PICDEM.net, PICkit, PICtail,
RightTouch logo, REAL ICE, SQI, Serial Quad I/O, Total
Endurance, TSHARC, USBCheck, VariSense, ViewSpan,
WiperLock, Wireless DNA, and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
Silicon Storage Technology is a registered trademark of
Microchip Technology Inc. in other countries.
GestIC is a registered trademark of Microchip Technology
Germany II GmbH & Co. KG, a subsidiary of Microchip
Technology Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2015, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
ISBN: 978-1-63277-613-6
QUALITYMANAGEMENTSYSTEM
CERTIFIEDBYDNV
== ISO/TS16949==
2015 Microchip Technology Inc.
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS50002400A-page 27
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07/14/15
DS50002400A-page 28
2015 Microchip Technology Inc.